气候变化领域集成服务门户(CCPortal): Water balance observations reveal significant subsurface water seepage from Lake Nam Co, south-central Tibetan Plateau

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DOI	10.1016/j.jhydrol.2013.03.030
	Water balance observations reveal significant subsurface water seepage from Lake Nam Co, south-central Tibetan Plateau
	Zhou, Shiqiao; Kang, Shichang; Chen, Feng; Joswiak, Daniel R.
发表日期	2013
ISSN	0022-1694
EISSN	1879-2707
卷号	491
英文摘要	Hydrological observations including precipitation, runoff, evaporation and lake level were performed in detail in the basin of the Lake Nam Co in the southern-central Tibetan Plateau from 2007 to 2011. Two runoff coefficients at differing catchment scales were obtained and applied to derive the surface water inflow to the lake from the non-glaciated areas. Total runoff was partitioned into contributions from glaciated and non-glaciated areas at two additional catchment scales. The runoff from the non-glaciated areas amounted to 1400 mm lake depth during the observation period from May 18 to October 17, 2008, during which the most complete set of observations was obtained. Neglecting groundwater contributions, this amount accounted for 55-65% of the total water input to the Lake Nam Co. The precipitation contribution and the meltwater inflow from the glaciers accounted for 23-28% and 7-22% of the total water input to the lake, respectively. The water input was found to be 810-1220 mm lake depth (1.63 x 10(9)-2.47 x 10(9) m(3)) more than the output of the lake during a 5-month period in 2008. Similar results were obtained for the years 2007 and 2009-2011. As there is no surface outflow from the lake, the large water imbalance can only be explained by water seepage, corresponding to an average outflow of 120-190 m(3) s(-1) or 5-8 mm lake water depth per day. It is likely that the main pathway for lake water seepage is through the sub-surface fault system, which is known to exist in the area. (C) 2013 Elsevier B.V. All rights reserved.
关键词	Lake Nam Co Water balance Tibetan Plateau Water seepage
学科领域	Engineering; Geology; Water Resources
语种	英语
WOS研究方向	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111684
作者单位	Chinese Acad Sci, Key Lab Tibetan Environm Changes & Land Surface P, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Shiqiao,Kang, Shichang,Chen, Feng,et al. Water balance observations reveal significant subsurface water seepage from Lake Nam Co, south-central Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2013,491.
APA	Zhou, Shiqiao,Kang, Shichang,Chen, Feng,&Joswiak, Daniel R..(2013).Water balance observations reveal significant subsurface water seepage from Lake Nam Co, south-central Tibetan Plateau.JOURNAL OF HYDROLOGY,491.
MLA	Zhou, Shiqiao,et al."Water balance observations reveal significant subsurface water seepage from Lake Nam Co, south-central Tibetan Plateau".JOURNAL OF HYDROLOGY 491(2013).